CVE-2026-54099

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-22. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
0.1%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
Patch available. Sources: redhat.
redhat

2487950 – (CVE-2026-54099) CVE-2026-54099 windows-machine-config-operator: windows-machine-config-operator: WICD CSR extra-Organization allows privilege escalation to system:masters

https://bugzilla.redhat.com/show_bug.cgi?id=2487950
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-54099

Vendor Advisories for CVE-2026-54099(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 32× in last 7d / 67× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 00:04 UTCEG score recompute
  2. 2026-07-07 00:04 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 12:15 UTCEG score recompute
  6. 2026-07-06 12:15 UTCGHSA enrichment
  7. 2026-07-06 00:08 UTCEG score recompute
  8. 2026-07-06 00:08 UTCGHSA enrichment
  9. 2026-07-05 12:16 UTCEG score recompute
  10. 2026-07-05 12:16 UTCGHSA enrichment
  11. 2026-07-05 00:27 UTCEG score recompute
  12. 2026-07-05 00:27 UTCGHSA enrichment
  13. 2026-07-04 12:37 UTCEG score recompute
  14. 2026-07-04 12:36 UTCGHSA enrichment
  15. 2026-07-04 00:47 UTCEG score recompute
  16. 2026-07-04 00:47 UTCGHSA enrichment
  17. 2026-07-03 12:56 UTCEG score recompute
  18. 2026-07-03 12:56 UTCGHSA enrichment
  19. 2026-07-02 23:49 UTCEG score recompute
  20. 2026-07-02 23:49 UTCGHSA enrichment
  21. 2026-07-02 12:01 UTCEG score recompute
  22. 2026-07-02 12:01 UTCGHSA enrichment
  23. 2026-07-02 00:12 UTCEG score recompute
  24. 2026-07-02 00:12 UTCGHSA enrichment
  25. 2026-07-01 15:07 UTCEPSS rescore
Show 42 more
  1. 2026-07-01 12:23 UTCEG score recompute
  2. 2026-07-01 12:23 UTCGHSA enrichment
  3. 2026-07-01 00:35 UTCEG score recompute
  4. 2026-07-01 00:35 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 12:43 UTCEG score recompute
  7. 2026-06-30 12:43 UTCGHSA enrichment
  8. 2026-06-30 00:55 UTCEG score recompute
  9. 2026-06-30 00:55 UTCGHSA enrichment
  10. 2026-06-29 13:07 UTCEG score recompute
  11. 2026-06-29 13:07 UTCGHSA enrichment
  12. 2026-06-29 01:18 UTCEG score recompute
  13. 2026-06-29 01:18 UTCGHSA enrichment
  14. 2026-06-28 13:29 UTCEG score recompute
  15. 2026-06-28 13:29 UTCGHSA enrichment
  16. 2026-06-28 01:41 UTCEG score recompute
  17. 2026-06-28 01:41 UTCGHSA enrichment
  18. 2026-06-27 13:52 UTCEG score recompute
  19. 2026-06-27 13:52 UTCGHSA enrichment
  20. 2026-06-27 02:03 UTCEG score recompute
  21. 2026-06-27 02:03 UTCGHSA enrichment
  22. 2026-06-26 14:14 UTCEG score recompute
  23. 2026-06-26 14:14 UTCGHSA enrichment
  24. 2026-06-26 02:25 UTCEG score recompute
  25. 2026-06-26 02:25 UTCGHSA enrichment
  26. 2026-06-25 14:36 UTCEG score recompute
  27. 2026-06-25 14:36 UTCGHSA enrichment
  28. 2026-06-25 02:47 UTCEG score recompute
  29. 2026-06-25 02:47 UTCGHSA enrichment
  30. 2026-06-24 14:59 UTCEG score recompute
  31. 2026-06-24 14:58 UTCGHSA enrichment
  32. 2026-06-24 14:05 UTCEPSS rescore
  33. 2026-06-24 03:10 UTCEG score recompute
  34. 2026-06-24 03:10 UTCGHSA enrichment
  35. 2026-06-23 21:33 UTCEPSS rescore
  36. 2026-06-23 21:33 UTCEPSS rescore
  37. 2026-06-23 15:20 UTCEG score recompute
  38. 2026-06-23 15:20 UTCGHSA enrichment
  39. 2026-06-23 03:32 UTCEG score recompute
  40. 2026-06-23 03:32 UTCGHSA enrichment
  41. 2026-06-22 15:37 UTCEG score recompute
  42. 2026-06-22 15:37 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54099?
CVE-2026-54099 is a high vulnerability published on June 22, 2026. A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A…
When was CVE-2026-54099 disclosed?
CVE-2026-54099 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54099 actively exploited?
CVE-2026-54099 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54099?
CVE-2026-54099 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-54099?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54099, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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